package com.example.demo.base.thread.juc;
/**
 * juc demo :https://www.cnblogs.com/dolphin0520/p/3920397.html
 * 用法：CountDownLatch、CyclicBarrier和Semaphore
 * 使用了那些 aqs 底层功能呢？
 * CountDownLatch 倒计时锁
 * CyclicBarrier  篱栅
 * Semaphore 信号灯
 */
